A rope trick is the whimsical term given by physicist Dr. John Malik to the curious lines and spikes which emanate from the fireball of a nuclear explosion just after detonation. The image is from the Tumbler-Snapper test series of 1952. Photo credit: Lawrence Livermore National Laboratory

The F-15 Eagle is a multi-role tactical fighter designed by McDonnell Douglas. The first flight of the F-15A was in July 1972, but since then it has been produced in six model variations with both single seat and dual seat versions.Photo credit: Staff Sgt. Jeffrey Allen, USAF

Photo taken by a RF-8 Crusader aircraft during a low-level photographic flight mission over the San Cristobal MRBM launch site in Cuba, November 1962, after the Cuban Missile Crisis. Although this image was taken days after the crisis had ended (October 28), this image has become iconic of the crisis to the point where it is often cited incorrectly as having been taken during the crisis.Photo credit: United States Air Force